Is the earth revolves around the sun-moon?

Answer 1

The Earth and the Moon revolve around their common center of mass, which is of course not the Earth's center, but it is still below the Earth's surface. For simplicity, it is often assumed that the Moon revolves around the Earth.

Answer 2

The Earth orbits the Sun while the moon orbits the Earth.

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The Earth/Moon common center of mass, which the

Earth and Moon both orbit, in turn orbits the sun.

Answer 3

The heavy side of the moon always faces "down", towards earth. Its rotation is thus exactly in phase with its orbit around the earth. This is similar to a bicycle wheel left to freely spin. The bicycle wheel will eventually settle with its valve, or heavy side, down. Over a long period of time, whatever spin the moon had initially has slowed and settled in the same way.

The complication that arises is in how we measure the moon's progress in its orbit. We typically like to measure the moon in relation to the sun, since that is how we define the moon's phases. It would be more correct to measure the moon's orbit relative to a distant star.

Answer 4

365.24 days.

Notice that on the average, it has to be exactly the same period for the moon as it is for the earth.

Otherwise, over a period of a few hundred years, the moon would lead or lag the earth by so much,

and be so far away from us, that we could hardly see it.

Answer 5

The Earth makes one revolution about its axis in one dayand a revolution in its orbit around the Sun in one year.

The Moon revolves in its orbit around the Earth in one month and around its axis also in one month (it always shows the same side to the Earth).

(the precise times depend on the frame of reference: the stars, the Sun, ...)

Answer 6

No. The Moon goes around (orbits) the Earth, and the Earth orbits the Sun. Everything in our solar system orbits the Sun.

The Sun, with the rest of the solar system, is orbiting the center of the Milky Way galaxy.

Answer 7

No. The rotation and revolution of the MOON are synchronized. The moon spins once on its axis AND travels once around the earth in exactly the same length of time ... about (27 and 1/3) days. That's why the same features of the moon always face toward the earth. If you begin at some zero time and watch the moon closely, then at some later time, when the moon has traveled, let's say, 98.6 degrees in its orbit around the earth, it has also rotated exactly 98.6 degrees of one full spin on its axis. The result is that the same mountains and the same valleys always point toward the earth. The synchronization is truly exact. If the moon's rotation and revolution were different by even the tiniest amount, then the difference would build up and build up, and over thousands of years we could see SOME difference in the face of the moon. But throughout the course of recorded history, as long as humans have made sketches of the moon's face, this hasn't happened. However, while the average rotation and revolution are exactly synchronized, the moon does "wobble" a little since the rotation is uniform but the revolution speeds up and slows down slightly over the course of an orbit. See the link for a movie of the wobble.

Answer 8

This has to do with the different orbital planets of Earth and the Moon. Earth revolves around the Sun in flat planar orbit. The Moon similarly revolves about Earth in flat planar orbit. But the planets are slightly tipped with respect to each other - a 5.2* tilt The moons rotation on its axis is equal to its orbit round the Earth with respect to the sun and stars. It presents one side permanently to the Earth so in relation to the earth it does not rotate.

Answer 9

Since Earth and Moon also move around the Sun, the Moon must move a little more than one complete turn around Earth to be (for example) opposite of the Sun again. From our point of view, the Sun changes its direction in the sky.

Answer 10

The same amount of time for both. That is why the same 'side' is always facing the Earth, (or mostly, anyway - over the course of a month, we actually get to see about 59% of the moons surface). It is called "geocentric orbit".